Question: Who was the head of government of Aosta Valley on January 4, 1984?
Paraphrase: Give me the head of government of Aosta Valley on January4, 1984?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q1222 p:P6 ?s . ?s ps:P6 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1984')) }